(C) In the Haber's process for the synthesis of $NH_3$, $Fe$ is used as the catalyst. $Mo$ was used as a promoter in earlier industrial processes. Cur

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(C) In the Haber's process for the synthesis of $NH_3$, $Fe$ is used as the catalyst. $Mo$ was used as a promoter in earlier industrial processes. Currently, a mixture of $K_2O$ and $Al_2O_3$ is used as the promoter to increase the efficiency of the catalyst.

Class 12 Chemistry Surface Chemistry Catalyst and Catalysis

Easy

During the preparation of $NH_3$ in Haber's process, the promoter$(s)$ used is / are -

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A
$PtO_2$
B
$Mo$
C
Mix of $Al_2O_3$ and $K_2O$
D
$Fe$ and $Mn$

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Class 12

Chemistry Questions

Chapter

Surface Chemistry

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Catalyst and Catalysis

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$A$ catalyst is a substance which

MediumIIT 1983

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The process in which one of the products acts as a catalyst is known as:

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Efficiency of the catalyst depends on its

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Match List-$I$ with List-$II$.

List-$I$ (Processes/Reactions) List-$II$ (Catalyst)

$A. 2 SO_{2(g)} + O_{2(g)} \rightarrow 2 SO_{3(g)}$ $I. V_{2}O_{5}$

$B. 4 NH_{3(g)} + 5 O_{2(g)} \rightarrow 4 NO_{(g)} + 6 H_{2}O_{(g)}$ $II. Pt_{(s)}-Rh_{(s)}$

$C. N_{2(g)} + 3 H_{2(g)} \rightarrow 2 NH_{3(g)}$ $III. Fe_{(s)}$

$D. \text{Vegetable oil}(l) + H_{2} \rightarrow \text{Vegetable ghee}(s)$ $IV. Ni_{(s)}$

Choose the correct answer from the options given below.

List-$I$ (Processes/Reactions)	List-$II$ (Catalyst)
$A. 2 SO_{2(g)} + O_{2(g)} \rightarrow 2 SO_{3(g)}$	$I. V_{2}O_{5}$
$B. 4 NH_{3(g)} + 5 O_{2(g)} \rightarrow 4 NO_{(g)} + 6 H_{2}O_{(g)}$	$II. Pt_{(s)}-Rh_{(s)}$
$C. N_{2(g)} + 3 H_{2(g)} \rightarrow 2 NH_{3(g)}$	$III. Fe_{(s)}$
$D. \text{Vegetable oil}(l) + H_{2} \rightarrow \text{Vegetable ghee}(s)$	$IV. Ni_{(s)}$